Earthquake swarm east of Grímsey island on 1-April-2021

Yesterday (1-April-2021) an earthquake swarm took place east of Grímsey island. The largest earthquakes in this swarm had a magnitude of Mw3,8 and Mw3,6 and where possibly felt even if that was not reported. Total of 142 earthquakes have taken place when this article is written.

earthquake activity east of Grímsey island. Two green starts on top of each other show the location of the earthquakes with magnitude above 3. Large amounts of red dots shows the location of smaller earthquakes that form a direct line few km long.
Earthquake activity east of Grímsey island. Copyright of this image belongs to Icelandic Met Office.

Earthquake activity is very common in this part of the Tjörnes Fracture Zone and it is now just around one year since a large earthquake swarm took place far west of Grímsey island in June 2020. It is difficult to know of more earthquake activity is going to happen at this location in next few days.

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